Incandescent vapor-burner.



No. 653,9). 7 Patented July l7, I900. A. S. GREENWOOD.

INGANDESCENT VAPOR BURNER.

(Application filed Oci. 31, 1899.)

(No Model.)

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No. 653,9). Patented luly l7, I900.- A, S. GREENWOOD.

INCANDESCENT VAPOR BURNER.

(Application filed Oct. 31, 1899.)

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INCANDESCENT VAPOR-BURNER.

SPECIFICATION forming part of Letters Patent N 0. 653,910, dated July 17, 1900. Application filed October 31, 1899- Serial No. 735,392, (No model.)

T0 at whom, it may concern.-

Be it known that I, ALEXANDER S. GREEN- WOOD, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, (and whose post-office address is No. 136 East Lake street, Chicago, Illinois,) have invented certain new and useful Improvements in Lamp-Burners, of which the following is a specification.

My invention relates generally to improvements in burners for lamps, but more especially appertains to mechanical means for generating illuminating-gas from gasolene, petroleum, or other forms of hydrocarbon oils, and for purifying by the application of heat illuminating-gases.

The primary object of my improvements is to provide a device of this character in which the point of gas generation or of purification, if it be applied to gas already formed, will be placed where the liquid will be subjected to the highest degree of heat, thereby obtaining the greatest efficiency and avoiding the objections to the common types of such devices in which the gas is generated at a point above the flame or below it. Secondary objects are to employ few parts of simple and economical construction, easy operation, and which are readily accessible for the cleaning necessary to keep all such appliances at their highest efficiency; to provide an expansible' gas and air mixing chamber, thus regulating such admixture according to the peculiar needs of the burner, the pressure on the fluid and other conditions affecting the use of such appliances; to control the area of the gas-generatingchamber exposed to the direct action of the flame, and to conserve other utilities and economics which will be apparent from the description following and from the accompanying drawings, which form a part of this application, and in which I have shown a preferred form of construction and arrange ment of my invention as applied to a gasoleneburner and to a coal-gas burner.

In the drawings, Figure 1 is a vertical sectional view through the center of a gasoleneburner embodying my invention. Fig. 2 is a cross-section of same on line w m of Fig. 1.

Fig. 3 is a vertical sectional view of my invention applied to a common gas-burner as a means of purifylng the gas.

Referring to the drawings, A represents a vertical tube having a central bore a, which supports the burner and which may be attached to a lamp body or fixture in any desirable manner. Laid transversely across the upper end of the tube A and rigidly secured thereto is a horizontal tubular cylinder B, the rear end of which is closed or solid and the opposite or front end of which is closable by means of a threaded cap or thimble C, which is screwed on suitable threads formed on the tube, and to insure a tight joint agasket c is placed between the end of the tube or cylinder and the head of the cap.

Extending partially through the cylinder B is a chamber 1), the walls of which, near the front end, are threaded, as at b, and the rear end walls are reduced or contracted, as at 6 Fitting the chamber 1) is a needle-valve D, the point of which is formed to close the mouth of the contracted portion 1) when the valve is screwed up against it. A section of the valvestem is threaded, as at cl, its threads engaging the threaded walls of the chamber 1), and beyond this threaded section the stem extends through an opening provided. therefor in the thimble C and has secured to its outer end a button d, by means of which the valve may be operated by the fingers.

At the center of the horizontal diameter of the cylinder B an opening b is bored through the upper side of the cylinder, which serves as a jet, the lower end of said opening communicating with the chamber 1). Near the rear' end of the cylinder a second hole 11 is bored through the upper side of the cylinder, the lower end of which communicates with the contracted portion 5 of the said chamber. Inserted in the hole last named is one end of a small tube or pipe F, which extends therefrom upwardly, is bent inwardly for a short distance, is bent back into a vertical line, is bent upon itself and run parallel to the last vertical line, when it is bent outwardly and downwardly, then bent to run'parallel with the first vertical line until it reaches a point above the cylinder B, where it is bent inwadly and downwardly, is inserted in an opening provided therefor in the side wall of the tube A, and has its end communicate with the bore Ct of said tube. From the contour described and shown it will be observed that this tube F is given the general form of the l vertical plane of a bottle, the portion f repreresenting the neck and for the purposes of this description will be so designated, the end or point at which the tube is bent upon itself being f.

Secured to the cylinder 13 is a cylindrical shell E, which incloses the greater part of the tube F. Slidingly secured on the upper part of the shell is a burner e, which may be made of wire-gauze or of thin metal, with a number of holes 6 formed therethrough. In the center of the burner is an opening through which the dome or hood G is inserted in a manner to permit the sliding of the burner thereon. The hood G is tubular in form, preferably made of thin metal, rests on the bend f of the tube F, incloses the section f of said tube, and is of sufficient cross-diameter to form thereabout a chamber in which the heat is more or less confined.

As the flame is emitted through the orifices in the burner it will be seen that the hood G and the portions of the tube F inclosed thereby will be in the center of the flame, the latter taking the form indicated by dotted lines in the drawings. It will also be apparent that the area of the hood within the flame may be controlled by the sliding up or down of the burner and that such action also controls the size of the gas and air mixing chamber within the walls of the shell and burner.

Secured to the lower part of the tube A is acircular pan H for holding alcohol or other combustible fluid, the burning of which will produce the primary or initial generation of gas in the tube F. The tube A being connected with a supply of gasolene under pressure, the liquid will fill the pipe F and the portion 12 of the chamber b, the valve D being in its seat at the mouth of said portion. The burning of alcohol in the pan H will heat the tube A and the tube F, thereby converting the oil into gas in the latter tube, which when the valve is opened will flow into the chamber 12 and escape through the opening 11 into the chamber g, where it will become mixed with air drawn in from the atmosphere through the open bottom of the shell around the cylinder B. The chamber g being filled, the gas will escapethrough the burner e, at the surface of which it will be ignited in the usual manner, and the resulting flame will heat the hood G and the section f of pipe F contained therein, thus generating the gas at this point and continuing the generation so long as the flame burns and the gasolene flows through the tube F.

As is well known, there are various grades of gasolene as to purity, of kerosene, and other hydrocarbon oils, and the lower grades require greater heat to convert them into the best gas than the finer or higher grades, and this condition is provided for in my invention, where, by the employment of means for in creasing or diminishing the surface of the gasgenerating chamber exposed to the flame, I attain greater or less exposure of the liquid to the influence of such flame.

In the application of my invention to purifying gases I use, preferably, the form of device illustrated in Fig. 3, though various other forms may be utilized. In this application of my invention I dispense with the pan H and the cylinder 13 and apply the tube F directly to the burner-tube of the gas-jet, so that the gas must traverse the tube F before it reaches the point of ignition, as clearly shown in Fig. 3. In this, as in the other form,

the flame surrounds the chamber formed by the hood, which forms a purifying-chamber instead of a gas-generator, the refining influence of superheating gas being well understood.

While I have shown and described applications of my invention in the simplest forms,

I do not wish to be understood as limiting myself to details of construction, as various modifications are possible while retaining the same principles.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a burner of the character described, a gas-generating tube bent upon itself for a portion of its length, said portion lying within the flame of the lamp, and movable means for protecting said portion from direct contact with said flame, substantially as set forth.

2. In a burner of the character described, a gas-generating tube bent upon itself for a portion of its length, said portion lying within the flame of the lamp, a protector for said por tion of tube, and means for regulating the area of surface of said protector in contact with said flame, substantially as described.

3. In a burner of the character described, a gas-generating tube having a portion within the flame of the lamp, a hood or dome entirely surrounding said portion of tube, and adapted to protect it from direct contact with the flame, substantially as set forth.

4;. In aburner of the character described, a gas-generating tube having a portion within the flame, and a hood or dome loosely fitting over said portion of tube, and adapted to protube connected witha liquid-supply,a chambered and valved cylinder secured to said tube, a gas-generating tube or pipe having one end communicating with said first-named tube, and its other end communicating with the chamber of said cylinder and having a portion located within the flame, and means for protecting said portion of tube from direct contact with the flame, substantially as described.

7. In a burner of the character described, a tube connected with a liquid-supply, a chambered and valved cylinder secured to said tube, a gas-generating tube or pipe having one end communicating with said first-named tube and its other end communicating With the chamber of said cylinder, and having a portion Within the flame, means of protecting said portion of tube from direct contact with the flame, and a burner proper slidably arranged on said protecting means, substantially in the manner and for the purpose set forth.

8. In a burner of the character described, a liquidsupply tube, a shell forming a gas and air mixing chamber, a gas-generating tube having one end communicating With said supply-tube and its other end communicating with the gas and air mixing chamber, said generating-tube having a portion of its length Within the flame, and means of protecting said portion of tube from contact with the flame, substantially as set forth.

9. In a burner of the character described, the combination with a tube connected with a liquid-supply, a chambered cylinder secured to said tube, a valve fitting said cylinder, a fluid-conducting and gas-generating tube having one end communicating With said first-named tubeand its other end communicating with the chamber of the cylinder, a shell surrounding a portion of said generating-tube, a burner slidingly fitted to said shell, and a dome fitting over a portion of the generating-tube, substantially as set forth.

In testimony whereof I afflx my signature in the presence of two Witnesses;

ALEXANDER S. GREENWOOD.

Witnesses:

F. BENJAMIN, LoUIs CHASE. 

